Emulex 3.4 user manual LPFC.conf Parameters

Table 3: LPFC.conf Parameters (Continued)

Property Name	Scope	Default	Min	Max	Dynamic	Comments
dqfull-throttle-up-	Controller	1	0	128	Yes	Amount to increment LUN
inc	Specific					queue depth each time. This
						driver property causes the
						LPFC driver to decrement a
						LUN’s queue depth, if a queue
						full condition is received from
						the target. The queue depth
						will be decremented down to a
						minimum of 1. The variables
						dqfull-throttle-up-inc and
						dqfull-throttle-up-time are
						used to restore the queue
						depth back to the original. The
						dqfull-throttle-up-time driver
						property defines a time, in
						seconds, that is used to tell
						when to increase the current
						queue depth. If the current
						queue depth isn't equal to the
						lun-queue-depth, and the
						driver stop_send_io flag is
						equal to 0 for that device,
						increment the current queue
						depth by dqfull-throttle-up-inc
						(don't exceed the lun-queue-
						depth). So, if both driver
						properties are set to 1, then
						the driver increments the
						current queue depth once per
						second until it hits the lun-
						queue-depth. The only other
						way to restore the queue
						depth (besides rebooting),
						back to the original LUN
						throttle, is by running the
						command
						/opt/lpfc/resetqdepth X. This
						will restore the LUN throttle of
						all LUNs for HBA X back to
						the original value.

The HBAnyware Utility User Manual Page 64